Demountable rim.



J. D. REILLY. DEMOUNTABLE RIM.

APPLICATION FILED JAN. 6; I911,

1 ,228,24;6. Patented May 29, 19 17.

2 SHEETS-SHEET 1.

Jdukas 12. Red Jay J. D. REILLY.

DEMOUNTABLE RIM,

APPLICATION FILED MN. 6. 1917.

Patented May 29, 1917.

2 SHEETS -SHEET 2.

. amowoz Q 178111216617. EezlZZ y.

I nrnn -STATES JAM-ES D. REILLY, F PROVIDENCE, RHODE ISLAND.

, DEMOUNTABLE RIM.

ram-44c.

To all 'wfiomit may concern.

Be it knownthat I, JAMES D. REILLY, of

Providence, in the county of Providence description of the invention, such as will enable the operator to quickly and easily place ertain new and useful Improvements in Demountable Rin and I. do hereby declare the-following to be a full, clear, and exact able others'skilled in the art to which it appertalns to make andv use thesame My invention relates to demountable tire rims for wheels, and particularly to that type of rim comprising hinged sections Which may be swung inwardly to decrease the circumferential area of the rim to enor'remove a pneumatic tire.

i The object of my invention is to provide a r'nn of this characterihaving improved, simple and. eflicie'nt means whereby the hinged sections may be f itted each' to the other by a squared or butt joint and the-several sections maintained in position for a linement and in such alined position, the butt joints of the several parts being effective to prevent collapse of the parts when under pressure of an inflated tire.

- In the accompanying drawings, Figure 1 .is a front elevation of a pneumatic tire with my improved rim in knock-down or col lapsed p sition. Fig. 2 is a sectional view through the locking sections. Fig. 3 is a.

fragmentary perspective of the rim showing the locking sections and connecting links. Fig. 4- is an @yerted' fragmentary perspectveshowing-a form of latch means.

Referring th the drawings, 1 and 2 designate two sections forming the major portion of the wheel rim, such sections being hinged as at 3-. At their opposite ends each of the sections has a locking segment, 4, 5,

hinged thereto as at 6, 7. The hinged ends of the sections 1 and 2' and the segments 4 and 5 have what I term squared or butt ends so that the parts will be v firmly seated against each,other when the rim is ex-- panded. The freejends of thesegments-4, 5, are similarly provided with butt ends. By such construction there is no likelihood of the hinged members collapsing under the pressure of an inflated tire as occurs where the members are joined by overlapplng portioi.

In the drawings I have shown the segments 4, 5, provided on their outer faces Specification of Letters Patent.

mama M y 29, 1917;

..witl1 recesses 8, therecesses of thesegn ent i alining with those of the segment 5 to form -"seats for a pairof links 9 which latter have a fixed pivotal connection, as at 10, with the segment 5 and a movable pivotal COIII'IGULIOll .with the segment 4. It is manifest that a single recess in each of the segments, 4,5.

and one link may be employed instead of a plurality of recesses and lii-lks-ns herein shown and described. To effect the movable pivotal connection between the links and the segment 4, I providethe walls of the recesses of the latter with longitudinal grooves 12 which extend about half way, of the recesses from the end thereof toward the outer free end of the segment. These grooves form seats for the pivot 13'of the links 9 and allow the latter tomove longitudinally of the recesses in breaking the joint between-the segments 4, 5. The links are effective to keep the parts in proper position when the rim is expanded as well as to maintain them ready for alining when the rim is collapsed.

To insure against any undue expansion between the rim. sections and segments whenthe rim is in normal position, I provide a T-latch 15 which is adapted to be seated in a recess 1'6 formed partly in the under face of the segment 4 and partly in a recess in the segment 5, the latter recess being formed to accommodate the T end of the latch. The opposite end of the latter is pivoted to'the segment 4. Any preferredmeans may be employed to hold the latch as against accidental displacement. I have shown a button 17 working in a countersunk recess in the segment 5 which may be turned to engage the latch, a' portion of the latter being slightly depressed to permit the button to lie flush with the surface thereof.

The advantages of my invention will be apparent. It will be seen that Ihave provided a very simple and efficient tire rim' -which is readily collapsed for placing a tire -1. A demountable rim comprising hinged sections, a locking segment hinged to one of said seetionsand adapted to aline therewith, and a link connecting saidsegment with the other of said hinged sections, said link being of hinged sections, a pair of lockingsegments each hinged at one end to its complementary section, a link connecting said seg-' ments, said link having a fixed pivotal connection with one of said segments and a pivotal connectionwith the other segment permitting it to move relatively thereto, said segments having recesses to receive said link.

4. A demountable rim comprising a pair 3 of hinged sections, a pair of locking segments each hinged at one end to its complementary section, and each having a recess, the walls of the recess of one of said segments having a longitudinal groove, a link connecting said segments and adapted to fit in said recesses, and a pivot for said fitting in said grooves, the opposite end of said link being pivoted to the other of said seg- 4 ments. 7

5'. A demountable rim comprisinga pair of hinged sections, a pair of locking segments each having a hinged connection with one ofsaid sections and provided with a recess on its underside, a link connecting said segments, a movable fulcrum for said link, and a latch pivoted'to one of saidsegments and adapted to fit in said recess.

6. A demountable rim comprising a pair of hinged sections, a pair of'locking segments each having a hinged connectlonwlth one of said sections and provided with a recess on its underside, the recess of one segment being T-sha'pe, said sections and segments having butt ends, a link connecting said segments, a movable fulcrum for said link, and a .T-shaped latch adapted to fit in said recess, said latch having a pivotal connection with one of said segments.

In testimony whereof, I have signed this specification.

JAMES D. REILLY. 

